drivers/greybus/es2.c

65  * @urb: array of urbs for the CPort in messages
70 	struct urb *urb[NUM_CPORT_IN_URB];
107 	struct urb *cport_out_urb[NUM_CPORT_OUT_URB];
120 	struct urb *arpc_urb[NUM_ARPC_IN_URB];
141 static void cport_out_callback(struct urb *urb);
171 static void ap_urb_complete(struct urb *urb)
173 	struct usb_ctrlrequest *dr = urb->context;
176 	usb_free_urb(urb);
182 	struct urb *urb;
187 	urb = usb_alloc_urb(0, GFP_ATOMIC);
188 	if (!urb)
193 		usb_free_urb(urb);
206 	usb_fill_control_urb(urb, udev, usb_sndctrlpipe(udev, 0),
209 	retval = usb_submit_urb(urb, GFP_ATOMIC);
211 		usb_free_urb(urb);
231 	struct urb *urb;
236 		urb = cport_in->urb[i];
238 		ret = usb_submit_urb(urb, GFP_KERNEL);
241 				"failed to submit in-urb: %d\n", ret);
250 		urb = cport_in->urb[i];
251 		usb_kill_urb(urb);
260 	struct urb *urb;
264 		urb = cport_in->urb[i];
265 		usb_kill_urb(urb);
271 	struct urb *urb;
276 		urb = es2->arpc_urb[i];
278 		ret = usb_submit_urb(urb, GFP_KERNEL);
281 				"failed to submit arpc in-urb: %d\n", ret);
290 		urb = es2->arpc_urb[i];
291 		usb_kill_urb(urb);
299 	struct urb *urb;
303 		urb = es2->arpc_urb[i];
304 		usb_kill_urb(urb);
308 static struct urb *next_free_urb(struct es2_ap_dev *es2, gfp_t gfp_mask)
310 	struct urb *urb = NULL;
321 			urb = es2->cport_out_urb[i];
326 	if (urb)
327 		return urb;
338 static void free_urb(struct es2_ap_dev *es2, struct urb *urb)
343 	 * See if this was an urb in our pool, if so mark it "free", otherwise
348 		if (urb == es2->cport_out_urb[i]) {
350 			urb = NULL;
356 	/* If urb is not NULL, then we need to free this urb */
357 	usb_free_urb(urb);
397 	struct urb *urb;
410 	/* Find a free urb */
411 	urb = next_free_urb(es2, gfp_mask);
412 	if (!urb)
416 	message->hcpriv = urb;
424 	usb_fill_bulk_urb(urb, udev,
429 	urb->transfer_flags |= URB_ZERO_PACKET;
433 	retval = usb_submit_urb(urb, gfp_mask);
435 		dev_err(&udev->dev, "failed to submit out-urb: %d\n", retval);
441 		free_urb(es2, urb);
457 	struct urb *urb;
463 	urb = message->hcpriv;
465 	/* Prevent dynamically allocated urb from being deallocated. */
466 	usb_get_urb(urb);
468 	/* Prevent pre-allocated urb from being reused. */
470 		if (urb == es2->cport_out_urb[i]) {
477 	usb_kill_urb(urb);
485 	usb_free_urb(urb);
747 static int check_urb_status(struct urb *urb)
749 	struct device *dev = &urb->dev->dev;
750 	int status = urb->status;
758 			__func__, urb->actual_length);
776 	struct urb *urb;
784 		urb = es2->cport_out_urb[i];
785 		usb_kill_urb(urb);
786 		usb_free_urb(urb);
798 		usb_free_urb(es2->cport_in.urb[i]);
813 static void cport_in_callback(struct urb *urb)
815 	struct gb_host_device *hd = urb->context;
816 	struct device *dev = &urb->dev->dev;
818 	int status = check_urb_status(urb);
826 		/* The urb is being unlinked */
830 		dev_err(dev, "urb cport in error %d (dropped)\n", status);
834 	if (urb->actual_length < sizeof(*header)) {
840 	header = urb->transfer_buffer;
844 		greybus_data_rcvd(hd, cport_id, urb->transfer_buffer,
845 				  urb->actual_length);
850 	/* put our urb back in the request pool */
851 	retval = usb_submit_urb(urb, GFP_ATOMIC);
853 		dev_err(dev, "failed to resubmit in-urb: %d\n", retval);
856 static void cport_out_callback(struct urb *urb)
858 	struct gb_message *message = urb->context;
861 	int status = check_urb_status(urb);
876 	free_urb(es2, urb);
1024 static void arpc_in_callback(struct urb *urb)
1026 	struct es2_ap_dev *es2 = urb->context;
1027 	struct device *dev = &urb->dev->dev;
1028 	int status = check_urb_status(urb);
1038 		/* The urb is being unlinked */
1042 		dev_err(dev, "arpc in-urb error %d (dropped)\n", status);
1046 	if (urb->actual_length < sizeof(*resp)) {
1051 	resp = urb->transfer_buffer;
1067 	/* put our urb back in the request pool */
1068 	retval = usb_submit_urb(urb, GFP_ATOMIC);
1070 		dev_err(dev, "failed to resubmit arpc in-urb: %d\n", retval);
1339 		struct urb *urb;
1342 		urb = usb_alloc_urb(0, GFP_KERNEL);
1343 		if (!urb) {
1347 		es2->cport_in.urb[i] = urb;
1355 		usb_fill_bulk_urb(urb, udev,
1365 		struct urb *urb;
1368 		urb = usb_alloc_urb(0, GFP_KERNEL);
1369 		if (!urb) {
1373 		es2->arpc_urb[i] = urb;
1381 		usb_fill_bulk_urb(urb, udev,
1392 		struct urb *urb;
1394 		urb = usb_alloc_urb(0, GFP_KERNEL);
1395 		if (!urb) {
1400 		es2->cport_out_urb[i] = urb;